using System.IO;
/*
 * $Id: PdfEFStream.cs 106 2009-12-07 12:23:50Z psoares33 $
 *
 * This file is part of the iText project.
 * Copyright (c) 1998-2009 1T3XT BVBA
 * Authors: Bruno Lowagie, Paulo Soares, et al.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License version 3
 * as published by the Free Software Foundation with the addition of the
 * following permission added to Section 15 as permitted in Section 7(a):
 * FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY 1T3XT,
 * 1T3XT DISCLAIMS THE WARRANTY OF NON INFRINGEMENT OF THIRD PARTY RIGHTS.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU Affero General Public License for more details.
 * You should have received a copy of the GNU Affero General Public License
 * along with this program; if not, see http://www.gnu.org/licenses or write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA, 02110-1301 USA, or download the license from the following URL:
 * http://itextpdf.com/terms-of-use/
 *
 * The interactive user interfaces in modified source and object code versions
 * of this program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU Affero General Public License.
 *
 * In accordance with Section 7(b) of the GNU Affero General Public License,
 * you must retain the producer line in every PDF that is created or manipulated
 * using iText.
 *
 * You can be released from the requirements of the license by purchasing
 * a commercial license. Buying such a license is mandatory as soon as you
 * develop commercial activities involving the iText software without
 * disclosing the source code of your own applications.
 * These activities include: offering paid services to customers as an ASP,
 * serving PDFs on the fly in a web application, shipping iText with a closed
 * source product.
 *
 * For more information, please contact iText Software Corp. at this
 * address: sales@itextpdf.com
 */

namespace iTextSharp.text.pdf
{

    /**
    * Extends PdfStream and should be used to create Streams for Embedded Files
    * (file attachments).
    * @since	2.1.3
    */

    public class PdfEFStream : PdfStream
    {

        /**
        * Creates a Stream object using an InputStream and a PdfWriter object
        * @param	in	the InputStream that will be read to get the Stream object
        * @param	writer	the writer to which the stream will be added
        */
        public PdfEFStream(Stream inp, PdfWriter writer)
            : base(inp, writer)
        {
        }

        /**
        * Creates a Stream object using a byte array
        * @param	fileStore	the bytes for the stream
        */
        public PdfEFStream(byte[] fileStore)
            : base(fileStore)
        {
        }

        /**
        * @see com.lowagie.text.pdf.PdfDictionary#toPdf(com.lowagie.text.pdf.PdfWriter, java.io.OutputStream)
        */
        public override void ToPdf(PdfWriter writer, Stream os)
        {
            if (inputStream != null && compressed)
                Put(PdfName.FILTER, PdfName.FLATEDECODE);
            //PdfEncryption crypto = null;
            //if (writer != null)
            //    crypto = writer.Encryption;
            //if (crypto != null) {
            //    PdfObject filter = Get(PdfName.FILTER);
            //    if (filter != null) {
            //        if (PdfName.CRYPT.Equals(filter))
            //            crypto = null;
            //        else if (filter.IsArray()) {
            //            PdfArray a = (PdfArray)filter;
            //            if (!a.IsEmpty() && PdfName.CRYPT.Equals(a[0]))
            //                crypto = null;
            //        }
            //    }
            //}
            //if (crypto != null && crypto.IsEmbeddedFilesOnly()) {
            //    PdfArray filter = new PdfArray();
            //    PdfArray decodeparms = new PdfArray();
            //    PdfDictionary crypt = new PdfDictionary();
            //    crypt.Put(PdfName.NAME, PdfName.STDCF);
            //    filter.Add(PdfName.CRYPT);
            //    decodeparms.Add(crypt);
            //    if (compressed) {
            //        filter.Add(PdfName.FLATEDECODE);
            //        decodeparms.Add(new PdfNull());
            //    }
            //    Put(PdfName.FILTER, filter);
            //    Put(PdfName.DECODEPARMS, decodeparms);
            //}
            PdfObject nn = Get(PdfName.LENGTH);
            //if (crypto != null && nn != null && nn.IsNumber())
            //{
            //    int sz = ((PdfNumber)nn).IntValue;
            //    Put(PdfName.LENGTH, new PdfNumber(crypto.CalculateStreamSize(sz)));
            //    SuperToPdf(writer, os);
            //    Put(PdfName.LENGTH, nn);
            //}
            //else
            SuperToPdf(writer, os);

            os.Write(STARTSTREAM, 0, STARTSTREAM.Length);
            //if (inputStream != null)
            //{
            //    rawLength = 0;
            //    ZDeflaterOutputStream def = null;
            //    OutputStreamCounter osc = new OutputStreamCounter(os);
            //    //OutputStreamEncryption ose = null;
            //    //Stream fout = osc;
            //    //if (crypto != null)
            //    //    fout = ose = crypto.GetEncryptionStream(fout);
            //    //if (compressed)
            //    //    fout = def = new ZDeflaterOutputStream(fout, compressionLevel);

            //    byte[] buf = new byte[4192];
            //    while (true)
            //    {
            //        int n = inputStream.Read(buf, 0, buf.Length);
            //        if (n <= 0)
            //            break;
            //        fout.Write(buf, 0, n);
            //        rawLength += n;
            //    }
            //    if (def != null)
            //        def.Finish();
            //    if (ose != null)
            //        ose.Finish();
            //    inputStreamLength = osc.Counter;
            //}
            //else
            //{
            //    if (crypto == null)
            //    {
            if (streamBytes != null)
                streamBytes.WriteTo(os);
            else
                os.Write(bytes, 0, bytes.Length);
            //    }
            //    else
            //    {
            //        byte[] b;
            //        if (streamBytes != null)
            //        {
            //            b = crypto.EncryptByteArray(streamBytes.ToArray());
            //        }
            //        else
            //        {
            //            b = crypto.EncryptByteArray(bytes);
            //        }
            //        os.Write(b, 0, b.Length);
            //    }
            //}
            os.Write(ENDSTREAM, 0, ENDSTREAM.Length);
        }
    }
}
